The P2RE2 is a wired personal monitor system featuring the P2R Hybrid Bodypack Receiver and the E2 Dynamic-driver Earphones.

P2R Hybrid Bodypack Receiver
The P2R Receiver is the world's first bodypack receiver to function as a wired receiver, a wireless receiver, or both at the same time. This and other unique features, along with excellent sound quality, make the P2R an exceptional value. 
  Key Features
  Can operate as a wired or wireless bodypack, or both simulaneously
Frequency locator
Built-in headphone limiter
Integrated cable management
High-impact plastic chassis
1/4" Line inpit jack with high/low gain switch
 
  Operating Controls
  Volume knob
Frequency select
 
  LED Indicators
  Power
RF reception
Frequency
Limiter
Low Battery
 
E2 Dynamic Driver Earphones
Single high energy drivers deliver full range sound and isolation from outside noise. 
  Specifications 
  Transducer Type: dynamic high energy
Sensitivity (at 1 kHz): 105 dB SPL/mW
Impedance (at 1 kHz) 16 ohms
Output Connector: Gold-plated stereo, 3.5 mm (1/8-inch) phone plug
Cable Length: 1.57 m (62 inches)